Gundam Nataku wields a Twin Beam Trident. It is an upgrade from Shenlong's beam glaive (TV Version) / single-ended beam trident (Katoki Version) and has more strength and versatility as a weapon.
The Dragon Fang is an enhanced claw mounted on both arms and is designed for quick melee strikes. In its TV version, it was designed for quick direct strikes against enemy MS, often against their head, and mounted on extendable arms. Its range and firepower, including the flamethrowers, has been enhanced for greater combat potential.
Information from Gundam Wiki, Thank you for reading^^